ETC Request ID: STIS.ta.1351125

Exposure time (seconds) = 1.0000

gives: SNR = 223.9870

gives: Time to Saturation (for a single exposure) = 18.46 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 50,797.607 50,797.61 225.38
    Background 0.235 0.24 0.48
        Sky 0.001 1.09e-03 0.03
        Dark Current 0.234 0.23 0.48
    Read Out 25.20
Total in selected region 50,797.842 50,797.84 226.79
Brightest Pixel (single exposure) 6,502.120 6,502.12
Global Count Rates
    Source only 101,595.214 101,595.214
    Background (sky+dark) 27,332.314 27,332.31
Background per unit area
    Sky Background (arcsec-2) 0.048 0.048
    Dark Current (arcsec-2) 10.400 10.400
Extraction region
box of 3 x 3 pixels
    Effective Sky Area (pixels) 9.00
    Fraction of flux 0.50
    Fraction of flux in brightest pixel 0.06
Effective Wavelength 10867.98 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50OIII
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Bruzual Synthetic Stellar Spectra M5 III
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.0 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.1